*The number of the corresponding link is the number of link in case of full standard vehicle. Please note that the number of corresponding link might be different when replacing the number of sprocket or custom. *Please refrain from using on public roads because it is a product for competition exclusive designed. *The replacing of the chain size must be made by yourself. With regards to the installation, please make sure to check at the Motorbike Shop with technical skill.
Included Joint Link: Rivet Type (ZJ) It is the Grand Prix specifications certified by MotoGP
•Feature 1: Racing parts for winning It has a 5% tensile strength and 15% fatigue strength improvement over conventional products. It achieved balance of weight reduction and strength. It is a competition-specific chain that supports the world's top stage, MotoGP machines, and it is developed focusing on acceleration efficiency/operation performance/low friction by feedback of race data possessed by D.I.D. By making a recess on the pin tip, we are pursuing thorough weight reduction in gram units.
•Feature 2: Public road available (with displacement condition) It is originally a race dedicated chain, but it has become available conditionally with public traffic, please follow the above displacement limitation.
•Feature 3: It has a tensile strength improvement The strength against the size of the load when the chain is pulled to break, when receiving a large torque at the start represents the required strength.
•Feature 4: It improves fatigue strength It is the strength (load) that does not cause fatigue failure for loads that are repeatedly applied during winding, high speed driving, etc.
& Features 5: By making the pin barrel (part in contact with the bush) thicker in one step, the outer caulking part and the outer plate are held so as to sandwich it, and there is the effect of increasing the rigidity of the chain.
I bought these for Circuit. The feeling that I turned the rear tire after installing it with low friction felt light. The one before the replacement was used for 1 season, so I feel that I refreshed it considerably.
I used it the last time I converted to 520. About 23,000km in 5 years, I use it for everything from commuting to long touring to about twice a year for circuit driving. I did my best to maintainance as much as possible, but I got a Kink. Probably the limit of 20,000 km is the maximum you can comfortably run. The Chain's accuracy is great and it really feels like there is no friction loss until the Grease runs out. The speed of the car increases quickly.
I was an RK guy a while ago, but I DID go for it because it's so popular. I changed it and sure enough, it became Smooth and comfortable to drive. I think I will DID choose to DID from now on.
I used it for the 525 to 520 Conversion & Race vehicles. Maybe it's because it is a "for Race" model, or maybe it's because it is a conversion from the 525 Size, but it is clearly lighter to handle. The ERV7, the successor of this Chain, is now available and I suggest you to buy it if you are thinking of buying it.